Cetco's regular bentonite
tablets are a pre-formed compressed tablet made from high swelling sodium
bentonite. Stocked in Denver in 3/8" size.
These tablets will form a flexible, permanent, non-toxic seal in
monitoring well applications where water flow and hydrostatic pressures
are involved. Cetco's tablets will swell 10 to 15 times their dry volume
when hydrated with fresh water and will not shrink or crack over time. The
smaller the annular space ( ie: the distance from the outside of the
casing to the bore hole wall ) the smaller the diameter of tablets that
should be used. Tablets will provide you with an in place expansive
bentonite seal for your most sensitive monitoring well applications.
Tablets can be placed in either a wet or dry bore hole with the same ease
as pea gravel. Cetco's tablets are packaged in 5 gallon pails ( 50 lbs
per pail ) and are palletized and shrink wrapped 36 pails to a full
pallet.

PURITY: Montmorillonite content of about 90% minimum - - contains small
portions of Feldspar, Biolite, Selenite, ect. Tablets have a 2.3 to 2.5
specific gravity, a pH of 8.5 to 10.5 and a dry bulk density of 82 lbs per
cubic foot. The smaller your annular space ( distance from the
outside of the casing and the borehole wall ) the smaller the diameter of
tablet you should use.

3/8" Cetco Coated
Calcium Bentonite Tablets

Now you can pour bentonite pellets easily in
the bore hole with standing water without the problems such as bridging from
premature swelling. Cetco coated bentonite tables combines the
best of a high yielding virgin western bentonite and the coating treatment for a delayed
hydration allows the Cetco coted tablets to be poured or
pumped into standing water up to 500' before they start to swell up.
This method reduces waste, time, and handling costs associated with the
semi-liquid methods presently used. Cetco coated tablets
are stocked in
3/8" size, in 50 pound 5 gallon size pails.

QUANTITY PRICING for
BENTONITE TABLETS

Packaged in
50 lbs Pails

Per
Pails

3/8" Regular Tablets

$ 76.00

3/8" Coated Tablets

$ 129.00

Baroid's Bentonite Tablets
will provide an in place expansive bentonite seal in your most sensitive
monitoring well applications. They can be placed in either a wet or dry
bore hole with the same ease as pea gravel.

Baroid
Bentonite Tablet Reference TableWeight of Coated
Bentonite Tablets required
for a bore hole seal per 1 foot of depth in pounds.
Use figure for bore hole times depth to find full hole quantity. Then
deduct the amount
calculated for the casing used in the well. This will get you the
quantity you need to order.

Size

2"

3"

4"

5"

6"

7"

8"

9"

10"

3/8"

1.59

3.88

7.15

10.76

15.88

21.08

27.80

34.88

43.68

DO NOT CONFUSE TABLETS WITH
BENTONITE CHIPS

Tablets are compressed and will
swell to a greater volume than chips. Being more uniform in size and shape,
tablets are less likely to bridge or hang up in the well. Tablets start to
hydrate or swell slower than bentonite chips do, when dropped through standing
water. Therefore, they will drop to the desired depth where they will create
the proper seal between the borehole and the casing being sealed in place.